ASYNCHRONOUS DATA REPLICATION IN THE DATA CENTRE

Abstract

Originally the basic purpose of the data replication was to create a backup copy of the company’s business data. This data could be used in case of emergencies such as system crash, disaster recovery etc. The term is now widely used in the computing world as a method of making data available at geographically distributed sites. By nature, the databases provide replication as an inherent feature. Various open source database replication solution are commercially available today such as Slony for Postgres. Microsoft provides replication features in SQL server 2005. The distributed application can make use of replicated data to improve availability, enhance response time and also as originally conceived provide an innovative backup mechanism. The nature of many distributed applications developed and deployed by NIC differs from other distributed applications in the sense that the remote databases are updated in offline mode by local client applications. The central master database, ho...